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#Create a simulator object
set ns [new Simulator]
#Define different colors for data flows (for NAM)
$ns color 1 Green
$ns color 2 Purple
#Open the NAM trace file
set nf [open out.nam w]
$ns namtrace-all $nf
#Define a 'finish' procedure
proc finish {} {
global ns nf
$ns flush-trace
#Close the NAM trace file
close $nf
#Execute NAM on the trace file
exec nam out.nam &
exit 0
}
#Create four nodes
set n0 [$ns node]
set n1 [$ns node]
set n2 [$ns node]
$n0 shape hexagon
$n2 shape hexagon
$n0 label CLient
$n2 label Server
$n1 label Router
$n0 color blue
$n2 color blue
#Create links between the nodes
$ns duplex-link $n0 $n1 10Mb 10ms DropTail
$ns duplex-link $n1 $n2 10Mb 10ms DropTail
#Set Queue Size of link (n2-n3) to 10
$ns queue-limit $n0 $n1 10
$ns queue-limit $n1 $n2 10
#Give node position (for NAM)
$ns duplex-link-op $n0 $n1 orient right
$ns duplex-link-op $n1 $n2 orient right
#Monitor the queue for link (n2-n3)(for NAM)
$ns duplex-link-op $n0 $n1 queuePos 0.5
$ns duplex-link-op $n1 $n2 queuePos 0.5
#Setup a TCP connection
set tcp [new Agent/TCP]
$tcp set cwnd_ 3
$tcp set class_ 2
$ns attach-agent $n0 $tcp
set sink [new Agent/TCPSink]
$ns attach-agent $n2 $sink
$ns connect $tcp $sink
$tcp set fid_ 1
#Setup a FTP over TCP connection
set ftp [new Application/FTP]
$ftp attach-agent $tcp
#Schedule events for the CBR and FTP agents
$ns at 0.5 "$ftp start"
$ns at 4.0 "$ftp stop"
#Call the finish procedure
#after 5 seconds of simulation time
$ns at 5.0 "finish"
#Run the simulation
$ns run
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md5 generator
[md5 generator]
ios programlama ios programlama
v 2.0.9
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